DE365023C - Process for the production of finely divided, dry ammonium nitrate - Google Patents

Description

Process for the production of finely divided, dry ammonium nitrate. The production of ammonium nitrate has so far been done in such a way that the to be processed Lye was evaporated in special apparatus and the thickened brew in crystallizers let in.

In these crystallizers, the mass came with a correspondingly high level of evaporation to solidify or, with less evaporation, a crystal slurry was formed, the had to be spun, dried and ground as well as a long transport route, required a lot of apparatus and manpower.

With the former evaporation method, the solid salt had to be manually or mechanical aids are broken loose, crushed, ground and dried. -However, the economic disadvantages of even this simpler method were nonetheless still so large that the manufacture of ammonium nitrate was still very costly.

The disadvantages included the following: r. The distance the ammonium nitrate from the crystallizers required a lot of labor, expensive Maintenance of the containers and large material consumption.

2. The grinding and grinding required a larger number of Machines, their operation, maintenance and servicing.

3. Complicated drying apparatus was required and for this special operation, maintenance and servicing, plus a high consumption of heating fuels.

q .. The salt took on the long way through the various apparatuses all over again, making the manufacture of dry goods difficult and became costly.

5. There were complicated transport facilities between the individual machines necessary, which in turn required strength, operation, repairs and maintenance.

6. The one required for some essential uses of ammonium nitrate Cooling the salt prior to its storage or packaging made the use special expensive and, in particular, cooling systems that are difficult to maintain in the company necessary.

The new invention described below means one in this respect important commercial advancement in eliminating many of these evils or at least significantly reduced.

The ammonium nitrate is according to the new process in a simple shortest Production runs continuously from the lye to the dry, ready-to-ship, if necessary finely powdered and chilled salt processed with significant savings in terms of strength and effort, compared to previously used methods.

The molten liquor is removed from the evaporators in the shortest possible way automatically and continuously converted into the finished product: this happens according to the present process in that ammonium nitrate molten liquor, which still Contains moisture, is atomized by compressed gas, presumably this fine atomization causes the bursting of the water-trapping particles and at the same time the Evaporation of moisture causes.

In the accompanying drawing is an embodiment of the new method shown schematically.

The heated vessel a is fed by the evaporator b so that it always contains ammonium nitrate molten liquor and continuously through the adjustable outlet c can deliver. The molten liquor flowing out of the pipe c is discharged from the nozzle d outflowing hot or cold compressed gas hurled into the cooling chamber e, fine atomized and dried, with the rising cold wind bringing the heat of salt into the chimney f discharges. In order to avoid loss of salt dust by the Kairain, the filters are g or the like installed. -The procedure can also be omitted, for example the cooling chamber etc z. B. be carried out so that the atomized salt in a wide conveyor pipe reaches where it is moved quickly by means of vacuum or wind, .before it finds time to bake together.

Claims (1)

PATENT CLAIM: Process for the production of finely divided, dry ammonium nitrate, characterized in that the hot ammonium nitrate molten liquor flowing out of a container is atomized by compressed gas.